3.be supposed to : 应该, 理应 You are not supposed to smoke in here. 你不应在这里吸烟。 Employees are supposed to be here at eight every day. 雇员们应该每天8点钟到这里。 III.课文精讲 第一部分: paras.1-2 There are estimated to be more than 20,000 ov...